Reports of Societies

1908 Boston Medical and Surgical Journal  
negro is decidedly less susceptible to pain than the whites. The negro's skin is decidedly less susceptible to most forms of external irritation. A hot sun which may severely burn the white man will not affect the negro's skin. It is said to be very difficult to blister a true negro. Fox's statistics also show a lessened susceptibility to vegetable
doi:10.1056/nejm190806111582407 fatcat:ay6upwtycffbdpw72xslzw336e